19645824 divided by 640 
Let's see how many times 640 fits into 19645824.

Let's proceed to step 1:
640 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 640

Step 2:
19 divided by 640 is 0 with a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 19 to get 19.
Fetch the next digit (6) from the dividend, attach it to 19 and continue: 196 / 640

Advancing to step 3:
640 can be fit into 196 0 times, resulting in a remainder of 196.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 196 after subtracting 0 from 196.
Bring next digit (4) of the dividend behind the 196 and repeat the process: 1964 / 640

Going ahead to step 4:
When dividing 1964 by 640, we get 3 with a remainder of 44.
The next digit of our result is 3. 
Result so far: 3.0
If we take 1920 away from 1964, we end up with 44.
Append the next digit (5) from the dividend to 44 and continue with: 445 / 640

Moving on to step 5:
The number 640 fits into 445 0 times, leaving a remainder of 445.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Deduct 0 from 445 and we're left with 445.
Grab the next digit (8) from the dividend, add it to 445, then carry on: 4458 / 640

Advancing to step 6:
640 can be fit into 4458 6 times, resulting in a remainder of 618.
Write down 6 as next digit of the result. 
Result so far: 306.0
Subtracting 3840 from 4458 leaves us with 618.
Take the next digit (2) from the dividend and append it to 618, then repeat: 6182 / 640

Step 7:
If we divide 6182 by 640, we get 9 and a remainder of 422.
Use 9 as the next digit of our solution. 
Result so far: 3069.0
The remainder is 422 after subtracting 5760 from 6182.
Grab the next digit (4) from the dividend, add it to 422, then carry on: 4224 / 640

Moving on to step 8:
When dividing 4224 by 640, we get 6 with a remainder of 384.
Record the quotient 6 as the next digit in the result. 
Result so far: 30696.0
If we take 3840 away from 4224, we end up with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Step 9:
The number 640 fits into 3840 6 times, leaving a remainder of 0.
The next digit of our result is 6. 
Result so far: 30696.6
Subtract 3840 from 3840 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
0 divided by 640 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 30696.6
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
0 divided by 640 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 30696.6
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 30696.6 with a remaining 0.0.